"Gas Works" by Unknown - Dan Genier?, Amer., (20th Cent.)

Lithograph, ca. 1930's - 40's, Ed. unknown but likely small, a thin discreet mat line, pale to moderate glue stains in the irregular but original margins, toned verso from previous mount, two short repaired edge tears to bottom margin left of center, a few spots of pale foxing, on cream wove paper. Despite the mostly marginal issues, a very fine Depression WPA Era riverside Industrial image with it's towering storage tank, geometric buildings, conveyor chute, massive pipes and other apparatus dwarfing the two tiny figures lower right. Thus far I've not been able to identify the artist, but if anyone recognizes who this "Dan G." is, I'd appreciate knowing too.